Navigation Links
Brain Scans Might Help Spot PTSD
Date:4/3/2009

Study of US veterans shows key differences in neural activity

FRIDAY, April 3 (HealthDay News) -- Someday, doctors might use brain scans to diagnose post-traumatic stress disorder (PTSD), according to researchers who conducted tests on 42 American soldiers who'd recently served in Iraq or Afghanistan.

The male and female soldiers had comparable levels of combat exposure. They were divided into two groups, those with PTSD (22) and those who didn't have the condition (20); fMRI was used to examine the brain patterns of the soldiers while they performed a three-part, short-term memory task that included distractions.

The task is designed to measure the ability to stay focused, which is reduced in people with PTSD.

The researchers noted a number of brain activity differences between the PTSD group and the non-PTSD group, such as in the dorsal lateral prefrontal cortex, an area that plays a role in the ability to stay focused. While doing the memory task, the soldiers with PTSD performed more poorly when they were shown both traumatic and neutral photos, while the soldiers without PTSD were only distracted by the traumatic photos.

"This sensitivity to neutral information is consistent with the PTSD symptom of hypervigilance, where those afflicted are on high alert for threats and are more distracted by not only threatening situations that remind them of the trauma, but also by benign situations," study leader Dr. Rajendra Morey, an assistant professor of psychiatry at Duke University and director of the neuroimaging lab at Durham Veterans Administration Center, said in a news release.

"This has not been seen at the brain level before. If further research confirms this preliminary finding, this pattern could be useful in distinguishing the PTSD brain," Morey said.

The researchers also noted marked differences in an area in the medial prefrontal cortex that governs sense of self. This area showed a much higher level of activity when the soldiers with PTSD looked at combat photos, but showed little response in those without PTSD.

"This is consistent with what we see behaviorally in PTSD, where people with the disorder are much more likely than others to connect traumatic triggers to events that have increased personal relevance, such as the combat situations in war veterans," co-author Dr. Florin Dolcos, an assistant professor of psychiatry and neuroscience at the University of Alberta in Canada, said in the news release.

The study was to be presented Friday at a World Psychiatric Association meeting in Florence, Italy.

"As technology improves, imaging research is increasingly providing insights into the brains of people with post-traumatic stress disorder, pointing to potential biological markers distinguishing the PTSD-affected brain," Dolcos said. "The field is still in its infancy, but this raises the possibility that one day we may be able to see the disorder in the body as plainly as we now can see conditions such as heart disease and cancer."

More information

The U.S. National Institute of Mental Health has more about PTSD.



-- Robert Preidt



SOURCE: World Psychiatric Association, news release, April 3, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Draining away brains toxic protein to stop Alzheimers
2. Vision restoration therapy shown to improve brain activity in brain injured patients
3. Clinical depression linked to abnormal emotional brain circuits
4. Brain imaging reveals breakdown of normal emotional processing
5. Brain cells work differently than previously thought
6. Vaccine Stops Alzheimers Brain Tangles
7. Research may unlock mystery of autisms origin in the brain
8. Scientists Spot Brains Free Will Center
9. Free will takes flight: how our brains respond to an approaching menace
10. Alcoholics With Cirrhosis Have More Brain Damage
11. Brain Lesions Predict MS Progression
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Brain Scans Might Help Spot PTSD
(Date:3/23/2017)... ... 23, 2017 , ... The Wound Certification Prep Course ... Holdings, LLC, today announced that RestorixHealth® has officially endorsed WCPC as ... interested in becoming Certified Wound Specialist Physicians (CWSP®). , This collaborative effort ...
(Date:3/23/2017)... ... March 23, 2017 , ... Altec Products, Inc. , ... as their 2016 Microsoft Dynamics Partner of the Year at DocLink Evolution ... award recognizes The Resource Group for their outstanding relationship with Altec and their ...
(Date:3/23/2017)... FL (PRWEB) , ... March 23, 2017 , ... ... dietary supplements that help improve all aspects of people’s health and nutrition, announced ... for nutritional products. , Natural Subsistence develops nutritional supplements that help people ...
(Date:3/23/2017)... ... March 23, 2017 , ... ... all Americans facing life-altering and fatal diseases in opposition to the President’s ... that would eviscerate care, services, and hope for the most vulnerable among us. ...
(Date:3/23/2017)... , ... March 23, 2017 , ... ... audit software solution, iCode Assurance, at HCCA’s 21st annual Compliance Institute on March ... the coding audit process for all medical chart types with a comprehensive set ...
Breaking Medicine News(10 mins):
(Date:3/23/2017)... Denmark , March 23, 2017 Ascendis ... its innovative TransCon technology to address significant unmet medical ... will host a conference call and webcast on Monday, ... the Endocrine Society in Orlando, Florida ... disease pipeline candidates (TransCon Growth Hormone, TransCon PTH and ...
(Date:3/23/2017)... INVICTUS MD STRATEGIES CORP. ("Invictus MD" or the "Company") (CSE: ... AB Laboratories Inc. ("AB Labs") has successfully completed several ... Access to Cannabis for Medical Purposes Regulations ("ACMPR") located ... The facility, which was licensed for Cultivation under ... half capacity, with full production capacity scheduled by the ...
(Date:3/23/2017)... , March 23, 2017 ... vendor landscape with the top five players accounting ... 2015. These companies are Stryker Sustainability Solutions, Ethicon ... Services, Inc., and VANGUARD AG. Despite the high ... market is witnessing the prevalence of fierce competition ...
Breaking Medicine Technology: